Orion Group Holdings (NYSE: ORN) director purchases 3,000 shares

Rhea-AI Filing Summary

Orion Group Holdings Inc director Mary E. Sullivan purchased 3,000 shares of Common Stock on 2026-07-31 in a purchase classified as an open market or private transaction at $9.7872 per share. After this buy, she directly owns 277,904 shares. The Rule 10b5-1 trading plan checkbox was not selected.

Insider Trade Summary

Net Buyer: 3,000 shares

Net Buy 1 txn

Insider Sullivan Mary E

Role Director

Bought 3,000 shs ($29K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	3,000	$9.7872	$29K

Holdings After Transaction: Common Stock — 277,904 shares (Direct)

Key Figures

Shares purchased: 3,000 shares Purchase price: $9.7872 per share Shares owned after transaction: 277,904 shares

3 metrics

Shares purchased 3,000 shares Common Stock bought by Mary E. Sullivan on 2026-07-31

Purchase price $9.7872 per share Price paid for Common Stock on 2026-07-31

Shares owned after transaction 277,904 shares Direct holdings of Mary E. Sullivan following the reported purchase

Key Terms

Purchase in open market or private transaction, non-derivative, Rule 10b5-1

3 terms

Purchase in open market or private transaction financial

"Transaction code P described as purchase in open market or private transaction"

non-derivative financial

"Transaction reported as a non-derivative security"

Rule 10b5-1 regulatory

"Includes a Rule 10b5-1 trading plan checkbox that was not selected"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/04/2026 - 04:22 PM Accepted by SEC EDGAR 08/04/2026 - 04:21 PM Learn about SEC filing dates

FAQ

What did Orion Group Holdings (ORN) director Mary E. Sullivan buy in this Form 4?

Mary E. Sullivan bought 3,000 shares of Orion Group Holdings Common Stock at $9.7872 per share on 2026-07-31. The transaction is classified as a purchase in an open market or private transaction and increases her direct ownership stake.

At what price did ORN director Mary E. Sullivan purchase shares on 2026-07-31?

She purchased the shares at $9.7872 per share. The Form 4 reports a non-derivative purchase of 3,000 Common Stock shares on 2026-07-31, described as a purchase in an open market or private transaction, reflecting her acquisition cost per share.

How many Orion Group Holdings (ORN) shares does Mary E. Sullivan own after this transaction?

Following the reported purchase, Mary E. Sullivan directly owns 277,904 shares of Orion Group Holdings Common Stock. This figure represents her total direct holdings immediately after acquiring 3,000 additional shares in the 2026-07-31 transaction.

Is Mary E. Sullivan’s Orion Group Holdings (ORN) ownership from this Form 4 direct or indirect?

Her ownership is reported as direct. The Form 4 classifies the 3,000-share Common Stock purchase as directly held, with total direct holdings of 277,904 shares following the transaction, and no indirect ownership nature specified in the filing data.

Was Mary E. Sullivan’s ORN trade made under a Rule 10b5-1 trading plan?

The Rule 10b5-1 checkbox is not affirmed for this filing. The document-level indicator shows the Rule 10b5-1 trading plan box was not selected, so the reported 3,000-share purchase is not identified as executed under a Rule 10b5-1 plan.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sullivan Mary E

(Last) (First) (Middle)

2940 RIVERBY ROAD

SUITE 400

(Street)

HOUSTON TEXAS 77020

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Orion Group Holdings Inc [ ORN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/31/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/31/2026		P		3,000	A	$9.7872	277,904	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ E. Chipman Earle, Attorney-in-Fact	08/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)